EP 1282647 A2 20030212 - POLYSACCHARIDE ABSORBENT AND METHOD
Title (en)
POLYSACCHARIDE ABSORBENT AND METHOD
Title (de)
ABSORBIERUNGSMITTEL AUF DER BASIS VON POLYSACCHARID UND VERFAHREN
Title (fr)
ABSORBANT A BASE DE POLYSACCHARIDE ET PROCEDE
Publication
Application
Priority
- US 0112761 W 20010419
- US 57249200 A 20000515
Abstract (en)
[origin: WO0187365A2] Disclosed are novel polysaccharide absorbents and method for providing a water-swellable, water-insoluble modified polysaccharide having preferred age-stable absorption properties. The novel polysaccharide absorbents and method provide a natural-based absorbent and preferred aging characteristics for absorbency. A natural-based water-soluble carboxyalkylpolysaccharide is dissolved in water and recovered and heat-treated to form a carboxyalkyl polysaccharide which is water swellable and water insoluble. The water-swellable and water-insoluble carboxyalkyl polysaccharide having a preferred initial absorbency under load value is aged under at least about 60 percent relative humidity. In one aspect the aqueous mixture of water-soluble carboxyalkyl polysaccharide has a pH between about 4.0 and about 7.5. The natural-based material product having preferred absorbency under load and preferred aging characteristics retains at least about 50 percent of an initial Absorbency Under Load analytical testing value after aging.
IPC 1-7
IPC 8 full level
A61F 13/15 (2006.01); A61F 5/44 (2006.01); A61F 13/53 (2006.01); A61L 15/00 (2006.01); A61L 15/28 (2006.01); A61L 15/60 (2006.01); B01J 20/26 (2006.01); C08B 11/20 (2006.01); C08B 15/00 (2006.01); C09K 3/00 (2006.01)
CPC (source: EP KR)
A61L 15/28 (2013.01 - EP KR); A61L 15/60 (2013.01 - EP); C08B 11/20 (2013.01 - EP); C08B 15/005 (2013.01 - EP)
Citation (search report)
See references of WO 0187365A2
Designated contracting state (EPC)
AT BE CH DE FR GB LI
DOCDB simple family (publication)
WO 0187365 A2 20011122; WO 0187365 A3 20020411; AR 028447 A1 20030507; AU 5549601 A 20011126; BR 0110918 A 20040210; CN 1443200 A 20030917; EP 1282647 A2 20030212; JP 2003533285 A 20031111; KR 20020091836 A 20021206; MX PA02011059 A 20030310; RU 2002133855 A 20040627; ZA 200208582 B 20031110
DOCDB simple family (application)
US 0112761 W 20010419; AR P010102250 A 20010511; AU 5549601 A 20010419; BR 0110918 A 20010419; CN 01812860 A 20010419; EP 01928663 A 20010419; JP 2001583829 A 20010419; KR 20027015284 A 20021114; MX PA02011059 A 20010419; RU 2002133855 A 20010419; ZA 200208582 A 20021023